The former foreign secretary was fired from the frontbench in 2004, when the mother of an alleged mistress went public with claims of an affair. Tory leader Michael Howard said it was a “personal morality” issue.

Nigel Evans, a fellow Tory MP, said news of Mr Johnson’s divorce was a “personal tragedy” and wished them both well.

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He added: “We are in 2018, we’re not in the 1950s now – things move on.

“People make judgements about people, they’re able to distinguish between their personal lives and their public lives.”